Plants ‘Scream’ When They’re Cut, We Just Couldn’t Hear It. Until Now.

Strangely enough, plants aren’t just silent spectators—they’re actually sending out "secret messages" through high-pitched sounds like popping or clicking. These ultrasonic signals are invisible to humans but easily heard by nature, from bugs to other plants. Researchers at Tel Aviv University confirmed this by placing tomato and tobacco plants in soundproof chambers under stress conditions, capturing the resulting clicks, which varied by species. The theory? Cavitation—tiny air bubble explosions within plant stems. This could mean our smart homes might one day "hear" when a fern needs water or prompt us to guilt-trip ourselves into eating healthier.